High-density three-dimensional multilayer memory and fabrication method

Abstract

The present disclosure provides a high-density three-dimensional multilayer memory and a fabrication method, and relates to the preparation technology of memories. The memory comprises an underlying circuit part and a basic structure body disposed above the underlying circuit part, wherein the basic structure body is divided into two independent interdigitated structures by a curve-shaped division groove, at least three memory cell holes are formed in the curve-shaped division groove side by side, a vertical electrode is disposed in each memory cell hole, and the memory medium is an insulating medium; and a buffer region is placed on the inner wall of the memory cell hole and at the position of a first conducting medium layer, the buffer region protrudes from the inner wall of the memory cell hole to the central axis of the memory cell hole, and the buffer region is connected to the memory medium.